arch/arm/mach-imx/cpuidle-imx5.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (C) 2012 Freescale Semiconductor, Inc.
   4  */
   5
   6 #include <linux/cpuidle.h>
   7 #include <linux/module.h>
   8 #include <asm/system_misc.h>
   9 #include "cpuidle.h"
  10
  11 static int imx5_cpuidle_enter(struct cpuidle_device *dev,
  12                               struct cpuidle_driver *drv, int index)
  13 {
  14         arm_pm_idle();
  15         return index;
  16 }
  17
  18 static struct cpuidle_driver imx5_cpuidle_driver = {
  19         .name             = "imx5_cpuidle",
  20         .owner            = THIS_MODULE,
  21         .states[0] = {
  22                 .enter            = imx5_cpuidle_enter,
  23                 .exit_latency     = 2,
  24                 .target_residency = 1,
  25                 .name             = "IMX5 SRPG",
  26                 .desc             = "CPU state retained,powered off",
  27         },
  28         .state_count = 1,
  29 };
  30
  31 int __init imx5_cpuidle_init(void)
  32 {
  33         return cpuidle_register(&imx5_cpuidle_driver, NULL);
  34 }